AH
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Hwang, Gastroenterologist in Andover, MA?
Dr. Allen Hwang, MD is a Gastroenterologist, who primarily practices in Andover, MA with 2 additional practice locations. He is board certified by the American Board of Internal Medicine. Dr. Hwang is fluent in English, Mandarin, and Spanish, and is currently seeing new patients. Dr. Hwang’s practice accepts Medicaid, Medicare, UnitedHealthcare, Aetna, Cigna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Hwang’s office at (978) 459-6737.
What are Areas of Expertise for Dr. Hwang?
Dr. Allen Hwang, MD is a highly-rated, board-certified Gastroenterologist known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Hwang empowers patients to confidently navigate their health journey, specializing in Endoscopic Ultrasound, Endoscopy & Colonoscopy, or comprehensive wellness support. Serving the Andover/MA community, Dr. Hwang is dedicated to enhancing lives through expert, patient-centered care.
Is Dr. Hwang board certified in Gastroenterologist?
Yes, Dr. Allen Hwang, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Hwang speak?
Dr. Hwang and their clinical team can communicate with patients in the following languages:
English
Mandarin
Spanish
What conditions does Dr. Hwang treat?
As a Gastroenterologist, Dr. Hwang diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Hwang. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Colon Cancer Screening
- Health Screening
- Colorectal Cancer Screening (PDQ®)
- Screening Tests to Detect Colorectal Cancer and Polyps
- Tests to Detect Colorectal Cancer and Polyps
- Colorectal Cancer Screening
- Colonoscopy Screening
- Bowel Cancer Screening
ICD-10 Codes:
- Z1211: Encounter for screening for malignant neoplasm of colon
Also known as:
- Exposure to COVID-19
- COVID-19 (Coronavirus Disease 2019)
- COVID-19 contact
- Suspected coronavirus exposure
- SARS-CoV-2 exposure
ICD-10 Codes:
- Z20822: Contact with and (suspected) exposure to COVID-19
Also known as:
- Pancreatic Cyst
- Other Specific Pancreatic Disease
- Pancreatic Disease
- Cyst on Pancreas
- Pancreatic Pseudocyst
- Fluid Sac on Pancreas
- Miscellaneous Pancreas Disorders
- Named Pancreatic Conditions
- Other Defined Pancreas Problems
ICD-10 Codes:
- K862: Cyst of pancreas
- K8689: Other specified diseases of pancreas
Also known as:
- Acid Reflux
- GERD
- Acid Reflux (GER & GERD) in Adults
- Acid Reflux (GER & GERD) in Children
- Acid Reflux (GER & GERD) in Infants
- Gastroesophageal Reflux
- Heartburn
- Indigestion
ICD-10 Codes:
- K219: Gastro-esophageal reflux disease without esophagitis
Also known as:
- Chronic Stomach Inflammation
- Stomach Disorder
- Gastritis & Gastropathy
- Chronic gastritis
- Long-term stomach inflammation
- Persistent stomach lining inflammation
ICD-10 Codes:
- K2950: Unspecified chronic gastritis without bleeding
Also known as:
- Upper Middle Abdominal Pain
- Abdominal Pain
- Epigastric pain
- Pain below breastbone
- Upper stomach pain
ICD-10 Codes:
- R1013: Epigastric pain
Also known as:
- Benign Transverse Colon Polyp
- Benign Ascending Colon Polyp
- Benign Tumor
- Colonic Polyps
- Colon Polyps
- Non-cancerous transverse colon growth
- Transverse colon adenoma
- Transverse colon benign tumor
- Non-cancerous ascending colon growth
- Ascending colon adenoma
- Ascending colon benign tumor
ICD-10 Codes:
- D123: Benign neoplasm of transverse colon
- D122: Benign neoplasm of ascending colon
Also known as:
- Difficulty Swallowing
- Swallowing Disorder
- Dysphagia
- Trouble swallowing
- Painful swallowing
ICD-10 Codes:
- R1310: Dysphagia, unspecified
Also known as:
- Other Specific Bile Duct and Gallbladder Disease
- Bile Duct Disease
- Gallbladder Disease
- Specific Biliary Disorders
- Named Bile Duct Conditions
- Other Defined Biliary Diseases
ICD-10 Codes:
- K838: Other specified diseases of biliary tract
Also known as:
- Stomach and Duodenum Disorder
- Stomach Disorder
- Gastric Conditions
- Duodenal Conditions
- Digestive System Disorders
ICD-10 Codes:
- K3189: Other diseases of stomach and duodenum
Also known as:
- Colon Polyps
- Colonic Polyps
- Colorectal Polyps
- Intestinal Polyps
- Bowel Polyps
ICD-10 Codes:
- Z86010: Personal history of colon polyps
Also known as:
- Blocked Esophagus
- Esophagus Disorder
- Esophageal Obstruction
- Food Pipe Blockage
- Swallowing Difficulty
ICD-10 Codes:
- K222: Esophageal obstruction
Also known as:
- Dark, Tarry Stools (Melena)
- Gastrointestinal Bleeding
- Melena
- Black Stools
- Upper GI Bleed Signs
ICD-10 Codes:
- K921: Melena
Also known as:
- Obesity
- Take Charge of Your Health: A Guide for Teenagers
- Excess Weight
- Being Overweight
- High BMI
ICD-10 Codes:
- E669: Obesity, unspecified
Also known as:
- Chronic Hepatitis B
- Hepatitis B
- Long-term Hepatitis B
- Persistent Hepatitis B
- Hep B
ICD-10 Codes:
- B181: Chronic viral hepatitis B without delta-agent
Also known as:
- Colon Polyps
- Colonic Polyps
- Colorectal polyps
- Bowel polyps
- Intestinal polyps
ICD-10 Codes:
- K635: Polyp of colon
Also known as:
- Cirrhosis
- Liver scarring
- End-stage liver disease
- Chronic liver failure
ICD-10 Codes:
- K7460: Unspecified cirrhosis of liver
Also known as:
- Barrett's Esophagus
- Esophagus Disorder
- Barrett’s Esophagus
- Barrett's condition
- Esophageal metaplasia
ICD-10 Codes:
- K2270: Barrett's esophagus without dysplasia
Which procedures does Dr. Hwang perform as a Gastroenterologist?
As a Gastroenterologist, procedures performed by a Dr. Allen Hwang may include:
- Colonoscopy
- Colonoscopy Consultation
- Colorectal Cancer Screening
- Endoscopic Ultrasound
- Endoscopy / Endoscopic Ultrasound
- Gastric Balloon
- Gastric Stimulator Implantation Consultation
- Gastric Stimulator Implantation Follow Up
For detailed information, please contact Dr. Hwang's office.
Does Dr. Hwang accept my insurance?
Dr. Hwang accepts most major insurance plans. Important: Please call our office at (978) 459-6737 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Hwang accept in Andover, MA?
Dr. Hwang in Andover, MA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Blue Cross Blue Shield of Massachusetts
Boston Medical Center
CVS Health (formerly Aetna)
Fallon Community Health Plan
Medicare
Molina
Point32Health
State of Massachusetts
UnitedHealthcare
View All Insurances
Where is Dr. Hwang's office located?
Dr. Allen Hwang's Primary Practice
300 Federal St Ste 103
Andover, MA 01810
(978) 459-6737
Recognitions
Castle Connolly Doctor’s Choice Awards
Doctor’s Choice - 2025
Among the most nominated for the Castle Connolly Top Doctor recognition in 2025
Doctor’s Choice - Last 5 Years
Among the most nominated for the Castle Connolly Top Doctor recognition in the last 5 years
What is Dr. Hwang's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Hwang's National Provider Identifier (NPI) number is 1558532689.
What common questions do patients ask about Dr. Hwang?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Hwang
What is Dr. Allen Hwang's specialty?
Dr. Hwang is a Gastroenterologist near Andover, MA. An internist focused on diagnosing and treating disorders of the digestive system, encompassing the stomach, intestines, liver, and gallbladder. This specialist manages conditions like abdominal pain, ulcers, diarrhea, cancer, and jaundice, and performs intricate diagnostic and therapeutic procedures using endoscopes to examine internal organs. Contact Dr. Hwang to book an appointment today.
Is this Dr. Allen Hwang affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Hwang is affiliated with Lowell General Hospital, MerrimackHealth Lawrence Hospital which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Gastroenterologist?
Explore Gastroenterologist with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Allen Hwang accepting new patients in Andover, MA?
Yes, Dr. Allen Hwang is accepting new patients at this time.
Does Dr. Allen Hwang offer online booking?
Please contact Dr. Hwang's office at (978) 459-6737 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Allen Hwang?
Please contact Dr. Hwang's office at (978) 459-6737 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Allen Hwang have?
Dr. Allen Hwang is certified by the American Board of Internal Medicine.
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